Protective cover for injector-type safety razor head



FIG. I

J 7, 1969 E. w. LIVELY, JR 3,419,959

PROTECTIVE COVER FOR INJECTOR-TYPE SAFETY RA ZOR HEAD Filed Jan. 18, 1968 United States Patent Office Patented Jan. 7, 1969 1 3,419,959 PROTECTIVE COVER FOR INJECTOR-TYPE SAFETY RAZOR HEAD Earl W. Lively, Jr., 8604 Baltimore Drive, Dallas, Tex. 75225 Filed Jan. 18, 1968, Ser. No. 698,797 US. Cl. 3090 Int. Cl. B26b 21/40 1 Claim ABSTRACT OF THE DISCLOSURE This invention relates to injector-type safety razors and more particularly to a protector or cover designed to protect the cutting edge of the blade while the razor is not in use between shaves, and to protect persons or objects from the blade while the razor is in storage, transit, or otherwise.

While no such guard or shield has previously been developed for use on injector-type single-edge razors, several have been patented for use on double-edge razors; however, none of these can be rigidly attached to the razor by a simple, easy means that is both reliable and inexpensive to incorporate in the device.

It is a primary object of the invention to provide a guard for the injector-type razor, which can be quickly and easily placed on or removed from the head of the razor.

Another object is to overcome disadvantages and difficulties of attachment inherent in guards for double-edge razors, by utilizing the injector receptacle feature that is unique to the injector-type razor such as the Schick safety razor.

A further object is to provide a guard for a safety razor to take the place of the bulky case normally provided by the manufacturer, and thereby to save space.

Another object is to provide a guard which will not make contact with the cutting edge of the razor blade.

Another object is to provide protection to other objects when the razor is placed among them in ones luggage, for example, in a toilet articles kit.

A further object is to prevent injury to children or unskilled persons when the razor is stored in a bathroom cabinet, drawer, or the like.

A still further object of the invention is to provide a commercailly acceptable, one-piece guard for injector razors which lends itself to manufacture inexpensively by mass-production techniques.

Briefly stated, my invention comprises the provision of a trough-like guard covering the front and back surfaces and the cutting edge of the head of an injector razor, with part of the same piece of material extending upward to close one end of the trough, thence extending at a right angle back over and parallel to the trough, so as to form an insertion key by which the device may be injected into the insertion key receptacle of the razor head.

Although the appended claims set forth the features of this invention which are believed to be novel, details of the construction and use of the guard, as well as further objects and advantages thereof, will be apparent to persons skilled in the art by reference to the following description and accompanying drawing, in which:

FIGURE 1 is a top plan view of the protective cover comprising the instant invention, enlarged to twice the actual size;

FIGURE 2 is a rear side elevation of the protective guard, on the same scale as FIG. 1;

FIGURE 3 is an end elevation of the protective guard, showing the open end of the device, on the same scale as FIGS. 1 and 2; 1

FIGURE 4 is a perspective view of the protective guard, enlarged to eight times actual size, and viewed from the open end of the guard.

Specific reference is now made to the drawings in which the same reference characters are used for corresponding elements throughout.

The trough-like shield of the instant invention is formed by the front side 1, the rear side 2, and the bottom 3. The same material comprising the trough is extended upward from one end of the bottom oft he trough to form the closed end 4. Then the same material is extended at a right angle from the end 4, back over the top of the trough to form the insertion key 5, which is injected into the blade-package key receptacle of the injector razor head to fasten the protective cover in place.

All views in the drawings show two detents, 6 and 7, in the insertion key 5. The hook-like detent 6 is formed by stamping the material of the insertion key through to form the right-angled hook below. The elongated convex ridge detent 7 is formed without a break in the material; the ridge on the lower surface of the insertion key has a corresponding concave groove in.the top of the key. When the insertion key is pushed into the receptacle on the left side of the injector razor head, these two detents engage a spring-locking device already incorporated in the razor for holding a blade-injector cartridge. By this means, the invention is held rigidly and securely to the razor head, with no part of the guard touching the edge of the razor blade.

This protective cover device may be made of any suitable material such as metal, plastic or the like. I used a single piece of .032 inch 2024-0 aluminum for the prototype device. x

While I have illustrated a specific embodiment of my invention, various modifications may occur to those skilled in the art. The embodiment disclosed herein is of a descriptive rather than a limiting nature, and various changes and modifications may be effected without departing from the spirit of the invention or the scope of the appended claim.

What is claimed is:

1. A protective cover for an injector-type safety razor head, said cover comprising a one-piece device with a trough-like guard for the cutting edge of the razor head, open at one end and closed at the other, wherein the means of attachment is by an insertion key which is injected into the blade-package key receptacle of the razor head, said key being formed by an extension of the material of the protective trough at a right angle from the top of the closed end of the trough, back over and parallel to the trough, and including two detents in the key for engaging a spring-locking device in the key receptacle of the razor head, to secure the protective cover rigidly to the razor head.

References Cited UNITED STATES PATENTS 3,183,590 5/1965 Starre et al. 30-90 3,346,952 10/1967 Harris 3090 MYRON C. KRUSE, Primary Examiner. 

